JPH0553101A - LCD panel device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a liquid crystal panel device that does not require a large-diameter projection lens. [Structure] The liquid crystal panel device 100 is configured such that the incident light source light L
A microlens substrate 150 that collects ₁ and makes the collected light source light L ₁ into a parallel light ray L ₂ corresponding to the opening 141 of the black matrix 140 is provided on the incident side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal panel device used in a liquid crystal projector or the like.

[0002]

2. Description of the Related Art A conventional liquid crystal panel device 300 will be described with reference to FIG. The liquid crystal panel device 300 has a transparent TFT having a thin film transistor (TFT) formed inside.
FT side glass substrate 310, transparent common side glass substrate 320 on which a common electrode is formed, and both glass substrates 310, 320
Liquid crystal 330 sealed between the space and common side glass substrate 320
And a black matrix 340 attached to the inside of the. The black matrix 340 has openings 341 corresponding to picture elements.

The more incident light L ₁ that passes through the opening 341 of the black matrix 340, the brighter the image can be displayed. Therefore, a microlens substrate 350 is often provided on the incident side of the liquid crystal panel device 300. The microlens substrate 350 is a glass substrate in which a layer of different refractive index is formed as a lens portion by diffusing some kind of ions in a transparent glass substrate, and thereby a lens effect is provided. Is set so that as much incident light L ₁ as possible passes through the opening 341.

The liquid crystal panel device 300 having the above-mentioned configuration
A field lens 360 is provided on the exit side of
The image displayed on the liquid crystal panel device 300 is finally projected onto a screen or the like (not shown) via the projection lens 370.

[0005]

However, the above-mentioned conventional liquid crystal panel device has the following problems. That is, as shown in FIG. 3, the microlens substrate
In 350, the incident light L ₁ is the opening 34 of the black matrix 340.
Since the light is only condensed so as to pass through 1, the emitted light L ₂ emitted from the liquid crystal panel device 300 is diffused. Even if the field lens 360 is provided on the exit side, its correction is difficult. Therefore, a large-diameter projection lens 370, which causes a cost increase and a weight increase, is required.

The present invention was devised in view of the above circumstances, and an object thereof is to provide a liquid crystal panel device which does not require a large-diameter projection lens.

[0007]

A liquid crystal panel device according to a first aspect of the present invention collects incident light that has been made incident, and makes the collected incident light into parallel light corresponding to an opening of a black matrix. A microlens substrate is provided on the incident side.

Further, in the liquid crystal panel device according to the second aspect of the present invention, the first microlens substrate for condensing the incident light incident on the opening of the black matrix is disposed on the incident side, and the incident light passing through the opening is arranged. The second microlens substrates that form parallel light are provided on the exit side, respectively.

[0009]

1 is a schematic configuration diagram of a liquid crystal panel device according to a first embodiment of the present invention, and FIG. 2 is a schematic configuration diagram of a liquid crystal panel device according to a second embodiment of the present invention.

The liquid crystal panel device 100 according to the first embodiment is
The incident light L ₁ that has been incident is collected, and the collected incident light L ₁ is collected.
Microlens substrate 150 is provided on the incident side which forms ₁ to a parallel light corresponding to the opening 141 of the black matrix 140.

The liquid crystal panel device 100 according to the present embodiment includes a transparent TFT side glass substrate 110 in which TFTs are formed.
And a transparent common-side glass substrate on which the common electrode is formed
Liquid crystal 1 sealed between 120 and both glass substrates 110, 120
30 and a black matrix 140 attached inside the common side glass substrate 120.
At 0, an opening 141 corresponding to a picture element is opened. This point is similar to the above-described conventional liquid crystal panel device 300.

The liquid crystal panel device 100 is different from the conventional one in the microlens substrate 150. The microlens substrate 150 used in this liquid crystal panel device 100 is
Unlike the conventional one, the lens function is added to both front and back sides. That is, the microlens substrate 150 is provided in close contact with the common-side glass substrate 120, and the first lens portion 151 that collects the incident light L ₁ is provided on the light source side and the anti-light source side.
A second lens portion 152 that makes the incident light L ₁ parallel light is formed on each of the surfaces (that is, the surface in contact with the common-side glass substrate 12).

The first lens portion 151 collects incident light L ₁ that is incident as parallel light, and its focus is set so as to be inside the microlens substrate 150.
On the other hand, the second lens portion 152 collimates the incident light L ₁ condensed by the first lens portion 151 into parallel light, and its size, position, etc. are directly opposed to the opening 141 of the black matrix 140.

Therefore, the incident light L ₁ becomes parallel light, passes through the opening 141 of the black matrix 140, and is emitted as parallel light as it is as emission light L _{2 from the} liquid crystal panel device 100. The emitted light L ₂ is incident on the projection lens 190 via the field lens 180. Since the emitted light L ₂ is a parallel light, the projection lens 190 may have a smaller diameter than before.

Next, the liquid crystal panel device 20 according to the second embodiment.
0 will be described with reference to FIG. In the liquid crystal panel device 200, the first microlens substrate 260 that collects the incident light L ₁ on the opening 241 of the black matrix 240 is on the incident side, and the incident light L ₁ that has passed through the opening 241 is parallel light. Microlens substrates 270 are provided on the exit side, respectively.

That is, this liquid crystal panel device 200 uses one microlens substrate 150 of the liquid crystal panel device 100 of the first embodiment, but uses two microlens substrates 260 and 270. Be different.

In the first microlens substrate 260 provided on the incident side, the incident light L ₁ incident on the first microlens substrate 260 is a black matrix.
It is set to focus at 240 apertures 241. On the other hand, the second microlens substrate 270 is set so that the incident light L ₁ transmitted through the opening 241 of the black matrix 240 is made into parallel light.

That is, the first microlens substrate 260
Is provided in close contact with the common-side glass substrate 220, and a lens portion 261 that collects the incident light L ₁ that has been incident on the opening 241 of the black matrix 240 is formed on the surface in contact with the common-side glass substrate 220. ing.

On the other hand, the second microlens substrate 270 has a T
It is provided in close contact with the glass substrate 210 on the FT side.
A lens portion 271 that makes the incident light L ₁ that has passed through the opening 241 of the black matrix 240 into parallel light is formed on the surface in contact with the T-side glass substrate 210.

Most of the incident light L ₁ incident on the first microlens substrate 260 is caused by the lens portion 261 of the first microlens substrate 260 and the openings 24 of the black matrix 240 are formed.
Incident light L that is focused on 1 and passes through the aperture 241
₁ is collimated by the lens portion 271 of the second microlens substrate 270. Then, the emitted light L ₂ that becomes parallel light
Is incident on the projection lens 290 via the field lens 280. Therefore, the projection lens 290 may have a smaller diameter than the conventional one.

[0021]

The liquid crystal panel device according to the present invention does not require a large-diameter projection lens because the microlens substrate is provided so that the emitted light becomes parallel light. For this reason,
It is possible to contribute to downsizing and cost reduction of an image display device using a liquid crystal panel device.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a liquid crystal panel device according to a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a liquid crystal panel device according to a second embodiment of the present invention.

FIG. 3 is a schematic configuration diagram of a conventional liquid crystal panel device.

[Explanation of symbols]

100, 200 LCD panel device 140, 240 Black matrix 141, 241 (black matrix) aperture 150 Microlens substrate 260 1st microlens substrate 270 2nd microlens substrate L ₁ incident light L ₂ emission light

Claims (2)

[Claims] 1. A liquid crystal panel comprising a microlens substrate on the incident side, which collects incident incident light and makes the condensed incident light parallel light corresponding to an opening of a black matrix. apparatus. 2. A first microlens substrate for converging incident light incident on an opening of a black matrix on an incident side, and a second microlens substrate for collimating the incident light passing through the opening on an emitting side. A liquid crystal panel device, each of which is provided.